Re: Determing whether a regexp has capturing matches

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Re^2: Determing whether a regexp has capturing matches by adrianh (Chancellor) on Feb 27, 2007 at 16:03 UTC
D'oh. Of course. Thanks. `sub has_captured_matches { return $#+ };` [download]	[reply] [d/l]
Re^3: Determing whether a regexp has capturing matches by kyle (Abbot) on Feb 27, 2007 at 16:08 UTC
Keep in mind that `$#+` is -1 when the pattern does not match, regardless of whether there are captures. `"1234" =~ /(1)34/; print $#+, "\n"; "1234" =~ /134/; print $#+, "\n";` [download] That prints "-1" both times, and -1 is considered a "true" value.	[reply] [d/l] [select]
Re^4: Determing whether a regexp has capturing matches by adrianh (Chancellor) on Feb 27, 2007 at 16:45 UTC
Keep in mind that $#+ is -1 when the pattern does not match, regardless of whether there are captures. Good point. I was just thinking of my context where I'm guaranteed a successful match.	[reply]